At OUseful, Tony Hirst shows how one can take a search feed from Twitter, and run it through Yahoo Pipes, to produce a map showing who is tweeting about a particular subject & where.
This might be useful, indeed. So I cloned the pipe, and banged in ‘archaeology’ OR ‘archeology’, and made a copy of it available here.
I should have included ‘archaeology’ in other languages, but that’s easy enough to do in the search box.
Electric Archaeology 
“I should have included ‘archaeology’ in other languages, but that’s easy enough to do in the search box.”
It’s easy enough to do in a pipe too, using the Translate block
eg here’s a demo pipe that searches in English, Spanish, Russian and French given an English search term
http://pipes.yahoo.com/pipes/pipe.info?_id=UOLeaeEE3hGmfvCYrbQIDg